Consulta: subjectFacets:"Fresh water"
Registros recuperados: 18
Data/hora: 01/06/2024 09:47:28

Production and consumption of B group vitamins in situ.
Provedor de dados: 5
Autores: Kurata, A.
The changes in concentration of thiamine, biotin and vitamin B sub(12) in water of the soaked bottles for 6 h in situ in the north basin of Lake Biwa were examined successively over 30 hours. The concentrations of the vitamins changed comparatively during 6 h. soaking in situ. Generally, the concentrations of thiamine, biotin and vitamin B sub(12) were in high levels in the morning and in low levels in evening both in the soaked bottles and in the surrounding water. The fluctuation ranges in concentration of vitamins in a 5 m deep layer were greater than those in thermocline. From the data obtained with the soaked bottles in situ, it was supposed that the decrease of vitamins in concentration during the daytime surpass consumption of vitamins by...
Tipo: Text
Palavras-chave: Phytoplankton; Microorganisms; Bacteria; Metabolism; Biological production; Vitamin B; Fresh water.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-958.pdf

Selection of finfish species for aquaculture development in Martinique (FWI).
Provedor de dados: 5
Autores: Thouard, Emmanuel; Soletchnik, Patrick; Marion, J.
Since 1981, in Martinique, a programme of selection of fishes suitable for aquaculture has been conducted. Zootechnical and socio-economical constraints have led to the choice of three species, endemic and exotic: the palometa (Trachinotus goodei ), the red drum (Sciaenops ocellata ) and the red florida hybrid (Oreochromis sp.).
Tipo: Text
Palavras-chave: Trachinotus goodei; Pisces; Brood stocks; Sea water; Fresh water; Recirculating systems; Survival; Eggs; Sexual maturity; Spawning; Environmental conditions; Tropical fish; Fingerlings; Rearing; Aquaculture development; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1492.pdf

An automated photo-oxidation method for the determination of dissolved organic phosphorus in marine and fresh water
Provedor de dados: 5
Autores: Aminot, Alain; Kerouel, Roger.
A segmented flow automated method with on-line photo-oxidation for the determination of dissolved organic phosphorus + soluble reactive phosphorus (DOP + SRP) in seawater and fresh water is described here. A low-power lamp was used for a compact, easy-to-handle and low-ozone-producing manifold. The influence of seawater matrix components was studied in detail using natural seawater and salt solutions spiked with DOP model compounds. Bromide was found to be the most inhibitory species in seawater. The work shows that most salt solutions referred to as artificial seawater are not satisfactory model matrices to test the actual seawater matrix effect. Since DOP recovered in undiluted seawater samples was about half that obtained in fresh water samples, the...
Tipo: Text
Palavras-chave: Measurement; Fresh water; Seawater; Total dissolved phosphorus; Dissolved organic phosphorus.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-1678.pdf

Donnees sur les gasteropodes dulcicoles de l'ouest de la France: Mise en evidence de cinq groupes d'especes (ACP)
Provedor de dados: 5
Autores: Costil, F.
24 Species of Gastropoda, representing 3357 specimens, have been sampled in 57 varied ponds of Brittany (France). The most frequent species (at least in 10% of the samples) are considered according to their average abundance and dominance. The average specific richness of the ponds where the species have been collected is studied. In a second stage, the Gastropoda are analysed by means of a principal component analysis. The 1-2 plane correspond to 87% of the whole variance. This analysis associated with a cluster analysis led to the partition of 5 groups of species.
Tipo: Text
Palavras-chave: Gastropoda; Frequency analysis; Freshwater molluscs; Fresh water; Check lists; Inventories; Mathematical models; Ponds; Abundance.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-1713.pdf

Sources and distribution of fresh water around Cape Farewell in 2014
Provedor de dados: 5
Autores: Benetti, M.; Reverdin, G.; Clarke, J.s.; Tynan, E.; Holliday, N.p.; Torres‐valdes, S.; Lherminier, Pascale; Yashayaev, I.
We investigate the origin of freshwater on the shelves near Cape Farewell (south Greenland) using sections of three hydrographic cruises in May (HUD2014007) and June 2014 (JR302 and Geovide) 2014. We partition the freshwater between meteoric water sources and sea ice melt or brine formation using the δ18O of sea water. The sections illustrate the presence of the East Greenland Coastal Current (EGCC) close to shore east of Cape Farewell. West of Cape Farewell, it partially joins the shelf break, with a weaker near‐surface remnant of the EGCC observed on the shelf southwest and west of Cape Farewell. The EGCC traps the freshest waters close to Greenland, and carries a brine signature below 50m depth. The cruises illustrate a strong increase in meteoric water...
Tipo: Text
Palavras-chave: Fresh water; Water isotopes; South Greenland currents.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00591/70349/68413.pdf

A mid-Holocene transition in the nitrogen dynamics of the western equatorial Pacific: Evidence of a deepening thermocline?
Provedor de dados: 5
Autores: Kienast, M.; Lehmann, M. F.; Timmermann, A.; Galbraith, E.; Bolliet, T.; Holboum, A.; Normandeau, C.; Laj, C.
Sedimentary delta(15)N records from the oligotrophic western equatorial Pacific (WEP) off Mindanao show that late Holocene sedimentary delta(15)N is substantially lower than that of the early Holocene, following a gradual &gt;3 parts per thousand decrease that occurred between 7 and 3 kyrs ago. Analyses of modem day nitrate isotope profiles from the same region indicate the sensitivity of the WEP N pools towards (1) the advection of (15)N-enriched nitrate from the Eastern Equatorial Pacific (EEP) by the North Equatorial Current (NEC) and the Mindanao Current in subsurface waters and, (2) at shallow depths, the input of new and (15)N-depleted nitrate through N, fixation. We suggest that the Holocene decrease in sedimentary delta(15)N reflects a diminished...
Tipo: Text
Palavras-chave: Tropical Pacific; El Nino; Surface temperature; Fresh water; Nitrate; Mindanao; Ocean; Variability; Holocene; Seawater.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00207/31843/30257.pdf

Status and potential of Australian Lates calcarifer culture.
Provedor de dados: 5
Autores: Mackinnon, M.
Lates calcarifer is distributed widely in northern Australia and is important to both commercial and recreational fisheries. There is the research on hatchery production of the species in 1984 and this work is continuing. Hatchery reared fish have been stocked to reservoirs in northern Queensland and have been used in experimental grow-out trials. Fish weaned onto formulated diets by the age of 25 days were reared to marketable size (&gt; 500 g) in freshwater tanks. Despite suboptimal water temperatures the fish reached market size by the age of twelve months. Taste panel analysis showed that the pellet fed fish were of good quality. The sensitivity of growth rates to water temperature was demonstrated in both grow-out trials and reservoir stockings.
Tipo: Text
Palavras-chave: Lates calcarifer; Pisces; Fresh water; Fingerlings; Hatcheries; Cage culture; Water temperature; Food conversion; Pellet feeds; Culture tanks; Diets; Growth.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1429.pdf

Description of a new species of Ituglanis (Siluriformes: Trichomycteridae) from Serra dos Carajás, rio Tocantins basin
Provedor de dados: 83
Autores: Wosiacki,Wolmar B.; Dutra,Guilherme M.; Mendonça,Marina B.
A new species of Ituglanis is described from the rio Tocantins basin, State of Pará, Brazil. Ituglanis ina, new species, is distinguished from its congeners by the presence of a dark vertical bar over the base of the caudal-fin rays (vs. no bars over caudal-fin base); and by the presence of a middle trunk line of tiny neuromasts extending along the flank until the vertical through the dorsal fin, or near the caudal-fin base (vs. no middle trunk line of tiny neuromasts). Ituglanis ina can be further distinguished by a combination of characters related to color pattern and morphology. Comments on the relationship between Ituglanis species are presented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Color pattern; East Amazon; Fresh water; Neotropical catfish; Ostariophysi.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300007

Plan directeur de développement forestier pêche et aquaculture continentales
Provedor de dados: 20
Autores: Diouf, P.S.; Kebe, M.; Le Reste, L.; Bousso, T.; Diadhiou, H.D.; Gaye, A.B.
FAO, Rome (Italie);Ministère du Développement et de l'Hydraulique, Dakar (Sénégal)
Tipo: Book
Palavras-chave: Development potential; Fisheries; Aquaculture; Marketing; Development projects; Fish consumption; Hydrology; Inland water environment; Aquatic environment; Forests; Socioeconomic aspects; Climatic data; Natural resources; Fresh water; Natural resources; Fisheries; Aquaculture; Marketing; Development projects; Forests; Climatic data; Hydrology; Inland water environment; Aquatic environment; Http://aims.fao.org/aos/agrovoc/c_5091; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_550; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_2229; Http://aims.fao.org/aos/agrovoc/c_3062; Http://aims.fao.org/aos/agrovoc/c_29553; Http://aims.fao.org/aos/agrovoc/c_3731; Http://aims.fao.org/aos/agrovoc/c_3875; Http://aims.fao.org/aos/agrovoc/c_554.
Ano: 1991
URL: http://hdl.handle.net/1834/2886

SENDIR: répertoire des experts en sciences marines et eaux douces du Sénégal
Provedor de dados: 20
Autores: Keïta, A.
UNESCO-COI  ODINAFRICA II ((projet 513RAF 2041)
Tipo: Other
Palavras-chave: Experts; Oceanography; Physical oceanography; Fishery oceanography; Coastal oceanography; Fishery biology; Marine ecology; Fishery economics; Fishery industry; Fishery sciences; Fresh water; Physical oceanography; Fishery oceanography; Oceanography; Fishery biology; Marine ecology; Http://aims.fao.org/aos/agrovoc/c_5830; Http://aims.fao.org/aos/agrovoc/c_2938; Http://aims.fao.org/aos/agrovoc/c_12889; Http://aims.fao.org/aos/agrovoc/c_2937; Http://aims.fao.org/aos/agrovoc/c_4609.
Ano: 2003
URL: http://hdl.handle.net/1834/1708

Estudios preliminares en un cuerpo de agua dulce de Punta Fort William-Isla Greenwich
Provedor de dados: 20
Autores: Arcos, F.
Durante la Tercera Expedición Ecuatoriana a la Antártida en enero-febrero de 1991, como parte de los estudios de evaluación del impacto ambiental, se ha iniciado un reconocimieno físico, químico y biológico de un cuerpo de agua dulce en Punta Fort Williams, Isla Greenwich, Shetland del Sur. Se escogió un lago formado en una depresión del terreno con aporte de tipo glacial, expuesto al viento por tres de sus lados, poca profundidad por lo que es bién oxigenado y existe disponibilidad de nutrientes por degradación de materia orgánica vegetal proveniente de los alrededores y acarreada por los vientos. El lago es oligotrófico, sin aporte significativo de excretas de aves y mamíferos. Del plancton estudiado se define que hay un importante componente...
Tipo: Journal Contribution
Palavras-chave: Biochemistry; Biological surveys; Fresh water; Inland water environment; Freshwater ecology; Biochemistry; Freshwater ecology.
Ano: 1990
URL: http://hdl.handle.net/1834/3871

OceanExpert: presented at the Twenty-first Session of the IOC Committee on International Oceanographic Data and Information Exchange (IODE-XXI), Liège, Belgium, 23-26 March 2011.
Provedor de dados: 20
Autores: Pikula, Linda.
OceanExpert is a product developed by GEMIM in 1997 and continuously refined to advance with new technologies. It is maintained by the Secretariat and contains information on individuals and institutions involved in all aspects of Marine or Freshwater Research and Management worldwide. It is intended to be a tool for scientists, policy makers and anyone who needs to contact a marine or freshwater professional. OceanExpert  currently holds information on 13,168 experts and 4,455 institutions.It also includes job listings, upcoming events, individual scientist's publications listings, and links to the scientists IODE activities. Usage statistics indicate 30,000 uses per month.
Tipo: Working Paper
Palavras-chave: Information scientists; Marine water; Fresh water.
Ano: 2011
URL: http://hdl.handle.net/1834/5650

Aporte al conocimiento del zooplancton de agua dulce y estuarina del río Guayas. Guayaquil - Ecuador
Provedor de dados: 20
Autores: Luzuriaga de Cruz, M.
El presente trabajo corresponde al análisis de zooplancton colectado en cinco estaciones localizadas en el río Guayas. La primera estación estuvo situada 10 km. río arriba de la confluencia del río Babahoyo con el río Daule, en un pozo acuífero. Las otras estaciones se situaron en cuatro sitios consecutivos a lo largo del río Guayas. En este trabajo se han identificado 10 especies: Brachionus plicatilis (O. F. Muller) (Rotifera), Alona cambouei Guerne and Richard, 1893; Moina micrura Kurz, 1874 (Cladocera); Acartia tonsa Dana, 1848; Oithona dissimilis Linberg, 1940; Oithona neotropica Herbs, 1967; Oithona oligohalina Fonseca o Bjornberg, 1976; Mesocyclops longisetus (Thiebaud, 1914) y Pseudodiaptomus longispinosus Chad, 1989 (Copepoda). Las especies...
Tipo: Journal Contribution
Palavras-chave: Zooplankton; Fresh water; Geographical distribution; Rivers; Estuaries; Brackish water; Zooplankton; Geographical distribution; Rivers; Estuaries; Brackish water; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1049.
Ano: 1998
URL: http://hdl.handle.net/1834/2295

Mortandad  de peces en la laguna de Yahuarcocha, cantón Ibarra, provincia de Imbabura. Febrero 2003
Provedor de dados: 20
Autores: Maridueña, Ana; Chalén, Norma; Coello, Dialhy; Cajas, Jacqueline; Elías, Esteban; Solís, Pilar; Aguilar, Fernando.
En febrero de 2003 en la Laguna de Yahuarcocha, se registró la muerte masiva de peces, estimándose que morían aproximadamente 500 peces/m2 por causas no conocidas. Fenómeno que se mantuvo durante algunas semanas disminuyendo paulatinamente el número de muertes. El Instituto Nacional de Pesca realizó un monitoreo durante los días 19 y 20 de marzo, con la finalidad de determinar las posibles causas, para lo cual se analizaron los parámetros ambientales, biológicos, identificación de las especies presentes en la laguna y la histopatología de los órganos y tejidos de los peces afectados. Los parámetros físico-químicos en la columna de agua y sedimentos registrados se encontraron dentro de los rangos normales para cuerpos lóticos. Desde el punto de vista...
Tipo: Journal Contribution
Palavras-chave: Mortality causes; Pathology; Water quality; Fresh water; Fish diseases; Fish mortality.
Ano: 2011
URL: http://hdl.handle.net/1834/4501

Evaluación de la contaminación de la Presa Ejército Rebelde, Ciudad de La Habana, Cuba, mediante el empleo de protozoos como bioindicadores
Provedor de dados: 20
Autores: Ymas González, I.; Revilla Alcázar, I.; Prieto Trueba, D.
Fresh water systems are very important to men. They are used to diferents things like drinking water to humans, recreational bath and fishing culture, because of that, a good water quality is necessary and depends on its uses. Besides pathogens and sewage waters, contamination by organic mater could be so bad, resulting in death of water bodies. This can extinguish the disolved oxigen, which is a vital element for the development of the organisms that live in that water bodies. To study the contamination in Ejercito Rebelde dam from October 2005 to January 2006, it was used the saprobic system and protozoans as bioindicators of organic matter contamination. Were identificated 59 species of protozoans, in which ciliates represented 74,5 % of especies’s...
Tipo: Journal Contribution
Palavras-chave: Fresh water; Quality; Quality; Http://aims.fao.org/aos/agrovoc/c_6400.
Ano: 2009
URL: http://hdl.handle.net/1834/3453

Priorities for, and preferred approaches to, management of New Zealand fresh waters
Provedor de dados: 31
Autores: Hughey,   Kenneth F.D.; Kerr,   Geoffrey N.; Cullen,   Ross; Shen,   Fujun.
Since 2000 six standardised biennial public surveys of the state of the New Zealand environment have been undertaken. A fresh water case study was included in the 2010 postal survey and in an electronic survey. Desirable futures for New Zealand's fresh water resources, sources of damage to freshwater, preferred management approaches, and views about charges for commercial uses of water are reported. Respondents desire high quality water, are not prepared to trade that off for damaging economic gains, and support charges for commercial uses of water. We report public preferences for tools to manage water use.
Tipo: Conference Paper or Presentation
Palavras-chave: Public perceptions; Fresh water; New Zealand; Economic instruments; Management; Community/Rural/Urban Development; Environmental Economics and Policy; Health Economics and Policy; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/96943

Water footprint assessment of the Colombian cocoa production
Provedor de dados: 91
Autores: Ortiz-Rodriguez,Oscar O.; Naranjo,Carlos A.; García-Caceres,Rafael G.; Villamizar-Gallardo,Raquel A.
ABSTRACTThe main objective of the present research was to calculate the water footprint of the Colombian cocoa (Theobroma cacao L.) production. The evaluation of crop water requirement and irrigation requirement were based on climate, soil and crop conditions in the country. The water requirement estimation was based on data from six municipalities selected for their representativeness of the highest yield, productivity and commercial dynamics of the country. The results show that the Water footprint reached 17,100 m3 t-1. At the province level, the highest record for this parameter was observed in Tolima, with 23,239 m3t-1, while Huila registered the lowest level, with 13,475 m3t-1. Water use per crop unit can be influenced not only by agro-meteorological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate change; Cocoa; Evapotranspiration; Fresh water; Theobroma cacao L.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000900823

Occurrence of Dendrocephalus brasiliensis Pesta, 1921 (Crustacea, Anostraca) in the Caras river, southern Ceara, Brazil
Provedor de dados: 42
Autores: FREITA,FRANCISCO R.V.; LUCENA,,ISIS C. DE; ALENCAR,,DAMARES R.; SANTOS,ISRAEL J.M.; PINHEIRO,ALLYSSON P.
ABSTRACT Occurrence of Dendrocephalus brasiliensis Pesta, 1921 (Crustacea, Anostraca) in the Caras river, southern Ceara, Brazil. The specimens were collected in March and April 2014. The new occurrence extends the distribution and update area of occupancy of the species, which is characterized by a specific habitat: temporary lakes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Branchiopoda; Fairy shrimp; Aquiculture; Fresh water.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301047